feat(repo): add repo clean command to remove untracked files

This introduces the `pkgctl repo clean` command which removes every
untracked files from local package repositories (via `git clean`).

The usage is as simple as `pkgctl repo clean [OPTION] [PATH]` (where
"[PATH]" can be equal to a wildcard "*").

Component: pkgctl repo clean

1 files changed, 4 insertions, 0 deletions

diff --git a/doc/man/pkgctl-repo.1.asciidoc b/doc/man/pkgctl-repo.1.asciidoc
index 3d0f3f1..c1fd298 100644
--- a/doc/man/pkgctl-repo.1.asciidoc
+++ b/doc/man/pkgctl-repo.1.asciidoc
@@ -32,6 +32,9 @@ Options
 Subcommands
 -----------
 
+pkgctl repo clean::
+	Remove untracked files from the working tree
+
 pkgctl repo clone::
 	Clone a package repository
 
@@ -50,6 +53,7 @@ pkgctl repo web::
 See Also
 --------
 
+pkgctl-repo-clean(1)
 pkgctl-repo-clone(1)
 pkgctl-repo-configure(1)
 pkgctl-repo-create(1)